After receiving this order, I ordered one Regiment—the 7th—of Infantry to assemble at the Artillery drill rooms, and one troop of Light Artillery with two 6 pound field pieces, to muster at the Arsenal. I directed a small detachment of Infantry to protect the pieces. The regiment, when assembled, on account of the shortness of the notice, consisted of but little over two hundred men. The regiment is known to the citizens by the title of the National Guard. I went myself, in the evening, to the Artillery drill rooms, and informed the Magistrate that I would remain there to await orders. I understood there was to be a large Police force at the Theatre. Many of the Magistrates thought this force would be sufficient without the military. The regiment was under the command of Col. Duryea. There are eight Captains in the regiment. I cannot say they were all present. Capts. Shumway, Underhill, Pond and Price, were present. We remained there until a verbal message came to me from the sheriff, the purport of which was, that a mob had attacked the house and driven in the Police force, and were assailing the building; this was between 8 and 9 o’clock, as well as I can remember. On receiving this notice, I immediately ordered the Regiment to get ready for marching, and to distribute their ammunition, which consisted of one thousand rounds of ball cartridges; I sent at the same time an order to the Arsenal yard for the horse belonging to the Regiment to come up immediately to the drill rooms, and march with us to the grounds. The horsemen carried only their sabres; the troops were put on the march, and moved rapidly up Broadway to Astor-Place; the field pieces were Left at the Arsenal; no order was given to the artillery. I was not aware, until I got to the ground, of the extent of the mob; I thought the force I had with me, in connection with the Police force, would be sufficient to preserve the peace. Before getting on the ground, I mounted my horse, and took charge of the cavalry, directing the Infantry to follow close after us. The horsemen, on entering Astor-Place, were formed ten ahead, and advanced in that order until we got nearly opposite the corner of the Opera House; at this place, we were assailed with a shower of stones and brick bats, by which almost every man was hurt, and the horses rendered almost unmanageable; the men pushed rapidly through Astor-Place, and through the whole distance were assailed with a shower of stones; the infantry followed them. The mob extended from Astor-Place to the Bowery; the mounted men, being conspicuous marks, received most of the stones, and were driven off the ground. I dismounted, returned through the mob, and took charge of the Infantry. They were halted in line across the open space beyond the theatre, with a dense mob on both sides of them, who were assailing them with all sorts of opprobrious